Six-gene model underlying heterosis for culm length and flowering date in sorghum (Sorghum bicolor (L.) Moench).

ABSTRACT: Heterosis has been widely used to increase crop yield. Four genetic heterosis models have been proposed previously: dominance, overdominance, epistasis, and pseudo-overdominance models. In a previous study, the remarkable heterosis for culm length (CL) of the F₁ variety 'Tentaka' (MS79 × 74LH3213) of high biomass sorghum (Sorghum bicolor (L.) Moench) can be explained based on the dominance model involving five genes. However, whether other genes or epistatic interactions contribute to the heterosis remains unclear. Here, we clarified the two points and propose an updated model of the heterosis. We conducted quantitative trait locus (QTL) and epistasis analyses for CL and flowering date by employing a joint F₂ population, consisting of each F₂ population of

SUBMITTER: Okada S 

PROVIDER: S-EPMC12615806 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature